183.2.4.64/27

Public

Class B — /27 prefix — 30 usable hosts

Network Address
183.2.4.64
Broadcast Address
183.2.4.95
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
183.2.4.65
Last Usable IP
183.2.4.94
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (183.2.4.64). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 183.2.4.95 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 30 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask255.255.255.224 is the dotted-decimal equivalent of /27. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 183.2.4.64/27
Network Address 183.2.4.64
Broadcast Address 183.2.4.95
Subnet Mask 255.255.255.224
Wildcard Mask 0.0.0.31
Prefix Length /27
IP Address Class Class B
Total IP Addresses 32
Usable Host Addresses 30
First Usable IP 183.2.4.65
Last Usable IP 183.2.4.94
Network (Hex) 0xB7020440
Broadcast (Hex) 0xB702045F
Address Type Public / Globally Routable

Binary Representation

Network Address
10110111.00000010.00000100 10110111.00000010.00000100.01000000
Subnet Mask
11111111.11111111.11111111.11100000

The first 27 bits (1s in the mask) identify the network. The remaining 5 bits identify hosts within the network.

Split into Equal Subnets

Split 183.2.4.64/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 183.2.4.64/28 183.2.4.64 183.2.4.65 183.2.4.78 183.2.4.79 14
2 183.2.4.80/28 183.2.4.80 183.2.4.81 183.2.4.94 183.2.4.95 14

IP Address Sample

Showing first 16 of 32 total IPs.

183.2.4.64 net
183.2.4.65
183.2.4.66
183.2.4.67
183.2.4.68
183.2.4.69
183.2.4.70
183.2.4.71
183.2.4.72
183.2.4.73
183.2.4.74
183.2.4.75
183.2.4.76
183.2.4.77
183.2.4.78
183.2.4.79
… 16 more IPs …

/27 Subnet Reference

Total IPs 32
Usable Hosts 30
Subnet Mask 255.255.255.224
Wildcard 0.0.0.31

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